Securing device for removable wheels.



R. KRONENBERG. SECURING DEVICE FOR REMOVABLE WHEELS APPLICATION FILEDDEC. 16, 1912- Patented Apr. 25, 1916.

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rrian e ria rne RUDOLF KRONENB ERG,

OF OHLIGS, GERIVIANY.

SECURING DEVICE FOR REMOVABLE WHEELS.

Specification of Letters Patent.

Patented Apr. 25, T9148.

Application filed December 16, 1912. Serial No. 736,970.

To all whom it may concern:

Be it known that I, RUDOLF KRQNEX- nnno, subject of the King of Prussia.(German Emperor-Q residing at Ohligs, in the Province of the Rhine.Kingdoinot' Prussia. German Empire have invented certain new and usefulImprovements in Securing Devices for Removable 'heels. of which thefollowing is a specification.

This invention relates to a securing device for removable wheels. \Vithwheels which are removable from the hub. it is essential to provide aspecial securing device in order to relieve the screws which serve forholding fast the wheel upon the hub.

Hitherto. there have been provided attached to thefixed hub flange.oneor more fastening pins. which engaged in corresponding cavities ofthe wheel body. or there were formed projections and depressions uponthe hub, which projections and depressions corresponded to the wheelboring. These connecting devices are complicated and troublesome whenthe wheels are interchanged and also partly weaken'the wheel body.

The. present invention is designed to obviate these drawbacks. For thispurpose there is inserted between the removable wheel body and the hubflange, a hardened steel disk. which is roughened either on both sidesor only on one side. the contact surface of the wheel body and the hubflange are themselves provided with roughcning. \Yhen the wheel body ispressed against the hub flange by the fastening screws. then the pointsformed by the rougl'ielung penetrate into the contact surfaces of thewheel body or of the hub flan e. (onset uentlv there can take )lace norelative movement between the wheel body and the hub, and the wheel bodyis rotated by the hub and in this manner the. relieving of the tastcnin"screws is effected. If there is a disk roughened on both sides. this canbe loosely interposed; but if the disk is only roughened on one sidethen it must be fixed with its smooth side to that one of the twoadjacent surfaces which is smooth, that is to say, either to the hubflange Or to the wheel body. f

In the accompanying drawing-Figure 1 shows the elevation of a rougheneddisk a. Fig. 2 shows a section through themlddle part of the wheel witha constructional modification of the attachment disk (1 which disk isroughened on both sides, Fig. 3 illustrates a section through a middlepart of the wheel with roughened side flange.

6 indicates the fixed flange of the hub, e the middle part of theremovable wheel body and (Z the removable flange.

f indicates the screws whichserve to fix the detachable flange (Z andthereby to secure the wheel body to the fixed flange 6.-

These screws are therefore relieved of strain by means of the rougheneddisk (1. In this construction there is no special disk necessary,because the hub flange itself engages with the'projections of itsroughening in the depressions of the wheel body. If the wheel body onthe other hand. he roughened. then its roughened surface engages thedepressions in the hub flange. The roughened parts are preferably alsohardened.

Having now described the invention, what I claim is.

In a removable wheel. an outer hub body having alining aperturestherein. an inner hub body. a fixed flange carried at the inner end ofthe inner huh body and having apertures formed therein. a roughened diskintel-posed between said fixed flange and the opposed faceof said outerhub body and provided with a series of apertures. a removable flange onthe outer end of said inner hub body and having apertures adapted toaline with corresponding apertures of said outer hub body. saidroughened disk. and said fixed flange. and a transverse bolt) engaged insaid alining apertures. whereby to releasably bind the several partstogcther.

In testimony. whereof I have signed my name to, this specification inthe presence of two subscribing witnesses.

RUDOLF KROYENBERG.

Witnesses LOUIS VANDORY, H. J DUNLAP.

